The British Rail Class 99 was a fleet of train ferries, most of which were owned by Sealink, that carried rail vehicles between Britain and mainland Europe. When British Rail implemented the TOPS system for managing their operating stock, these ships were incorporated into the system in order to circumvent some of the restrictions of the application software. This allowed them to be counted as locomotives while carrying railway vehicles in the same way as a normal locomotive would haul a train. Details There were fifteen BR Class 99s, used for carrying road and rail vehicles from Britain to the continent (road only vehicles did not receive TOPS numbers). They were of various ages and origins, but all carried the BR double arrow logo on their red funnels. This was generally set up so that the upper arrow pointed towards the bow, and so was reversed on the port side of the ship. The hull was painted blue, with "Sealink" written in large grey letters between the waterline and the deck. A grey stripe was painted on some around parts of the top of the hull, with the main body of the ship being grey or white. Unlike other non-steam locomotives with TOPS numbers, no yellow warning panels were provided. Names were painted on the bow and stern but the TOPS numbers were not visibly carried. The number 99001 was reused for . The table shows the numbers allocated: There were also a number of other Sealink vessels which did not carry rail vehicles and so did not receive TOPS numbers. While in traffic several vessels were involved in various incidents. Vortigern grounded on the approach to Ostend in 1982. Sealink Vanguard collided with European Gateway on the approach to Harwich, also in 1982, causing serious damage to the latter vessel, which nearly sank altogether. This was the most serious accident that a Class 99 was involved in while working for Sealink, resulting in six fatalities. Disposal The mixed origins of the fleet meant that disposal was carried out in a patchy manner, and at no point were all 15 Class 99s in service. Instead, ships were cut up at any time after the 30-year-old mark, and so Sealink disposed of 6 prior to privatisation in 1984. No.99 009 Shepperton Ferry was withdrawn and broken up in Spain in 1972 while No.99 010 Invicta was dismantled in the Netherlands in